Excavator.



E. D. STORY.

EXCAVATOR.

AEPLlCATION FILED SEPT- l, 1916.

1 99,353. Patented Dec. 19, 1916.

3 SHEIETSSHEET,I.

Wiimodb.

E. D. STORY.

EXCAVATOR.

APPLIEATION HLED SEPT.I,I9I6.

1,209,853. Patented Dec. 10 1910.

3 SHEETS--SHE F 2.

E. D. STORY.

EXCAVATOR.

APPLICATION FILED SEPT-1,1916.

1 99,353. 7 Pi ltellfid Dec. 19, 1916.

3 SHEETS-SHEET 3- EDA D. STORY, OF TYLER, TEXAS.

EXGAVA'IOR.

Specification of Letters Patent.

Patented nee. ie, ioie.

Application filed September 1, 1916. Serial No. 118,088.

To all whom it may concern:

Be it known that I, ELA D. STORY, a citizen of the United States,residing at Tyler, in the county of Smith .and State of Texas, haveinvented certain new and useful Improvements in Excavators; andI dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to new and useful improvements in excavators andthe principal object of the invention 18 to provide an excavator whichis relatively light in construction and yet strong and substantial.

Another object of the invention is to provide an excavator having amovable bucket supporting frame which is arranged to be swung laterallyat its rear end so as to give the bucket the greatest possibleefficiency in order that an excavation of greater width than the widthof the device may be made.

A still further object of the invention is to provide a bucket having anendless controlling cable which is wound upon a suit-' able drum andwhich is arranged in such a manner that upon themoving of the drum toraise the bucketthe run of the cable for returning the bucket tooriginal position will be paying out from the drum and when the bucketis being returned the operating run of the cable will be paying out,while the returning run will be wound upon the drum. It will thus beseen that steel cable may be used without danger of the same becomingkinked.

Another object of the invention is to provide a cable for moving thebucket supporting frame laterally which cable like that previouslydescribed is also kept tight in order to avoid kinking.

A still further object of the invention is to provide a grubbing tooland rock crusher which is mounted in close proximity to the bucket sothat roots and weeds may be out androcks which are in the path of thetraveling bucket may be broken into small particles in order that theymay be removed.

A still further object of the invention is to provide a device which isso arranged that the bucket, frame and supports therefor together withthe grubbing tool may be dismantled and placed on the device fortransportation.

With these and other objects in View the invention consists in the novelcombination and arrangement of parts which will be fully set forth inthe following specification and accompanying drawings, in which Figure 1is a side view in. elevation of an excayator constructed in accordancewith this invention. Fig. 2 is a top plan view of Fig. Fig. 3 is anenlarged sectional view on line 33 of Fig. 2 illustrating the grubher indetail. Fig. 4; is a horizontal sectional view on line 4.-4 of Fig. 3.Fig. 5 IS an enlarged fragmentary detail view partly in section of thelower end of the grubber illustrating the stone crusher in dotted lines.Fig. 6 is a fragmentary top plan view of the forward end of the chassisof the device illustrating the method of supporting and adjusting therear end of the bucket frame, and Fig. 7 is a sectional view on line 7-7of Fig. 2.

Referring to the drawing the numeral 1 designates the main frame orchassis of the device consisting of a pair of channel bars arranged inspaced parallel relation and connected at their rear ends with atransversely extending bar designated by the numeral 2. The forward endsof the side bars of the frame are connected by a suitable transverse bar3 to which the steering shaft 4 is rotatably mounted. This steeringshaft is provided at its upper end with a steering wheel 5 while thelower end is provided with a crank to which the link 6 is connected theopposite end of which is connected to the connecting bar 7 of the arms 8which are formed on the steering knuckles 9 of the front axle designatedby the numeral 10. The rear axle is mounted in any suitable bearing andis provided with the wheels 11, one of which is provided with a sprocket12 over which the drive chain of the device passes. A motor 13 ismounted on the rear end of the frame and loosely mounted on the motorshaft is the drive sprocket 14. which is connected to the sprocket 12 bymeans of the endless chain 15. This sprocket 14C is provided with aclutch half designated by the numeral 16 which is adapted to cooperatewith the clutch half 17 which is splined on the motor shaft in such amanner that when the clutch half 17 is moved into engagement with theclutch half 16 the ends of the side bars of the frame 1 are suitablestandards 18 which are held against movement by the braces 19. The upperends of these standards have attached thereto the horizontal bars 20 ofthe brackets designated generally by the numeral 21 each of whichcomprises the horizontal bar 20 and an inclined bar 22, the upper end ofwhich is connected to the horizontal bar while the'lower end isconnected to the axle 10.

At the point where the inclined bar 22 joins the horizontal bar 20 ofthe bracket 21 is provided an upstanding member 23 provided at its upperterminal with the honzontal guide bar 24 on which the supporting yokesfor the grubbers and bucket guide frames are mounted.

As shown in the drawings there are two of the brackets and supportingarms and mounted on the supporting arm to the left is the grubberdesignated generally by the.

numeral 25 which comprises a frame 26 consisting of vertical guide barsconnected at their upper ends by a suitable horizontal bar and at-theirlower ends by a yoke 27 and a similar yoke 28 is connected between theupper and lower ends of the side bars of the frame 26. Secured betweenthe side bars and the frame intermediate its ends is the block 29carrying at its upper end the yoke 30 in which the roller 31 isjournaled. This roller is adapted to run on the upper side of the guidebar 24 in grder to support the device in place. A suitable pulley 32 isjournaled in a recess 33 in the inner edge of the block 29 and forms aguide for the rope 34, one end of which is connected to the weight 35,while the opposite end is connected to a winding drum 36 which will bemore fully hereinafter described. The lower end of the weight isprovided with a longitudinal groove 37 for the reception of the tongue38 on either the grubber or rock crusher designated by the numeral 39. Asuitable bolt 40 may be passed through the flanges formed by the groove37 and the tongue 38 in order to support the tool 39 in place.

Swivelly mounted near the outer end of the bracket 21 on the right sideof the frame as indicated at 41 is a yoke 42 which is best illustratedin Fig. 7. This yoke comprises an inverted V-shaped body carrying at thelower ends of its arms suitable inverted U-shaped yokes 43 in which arejournaled the rollers 44. These rollms form guide rollers on which thebucket frame, which will be more fully hereinafter described, rocks. Asuitable pulley 45 is attached to the under side of the yoke 42 andforms a guide for the cable or rope by means of which the movements ofthe bucket are controlled.

The bucket frame hereinbefore referred to is designated generally by thenumeral 46 and comprises a pair of parallel guide bars 47 connected attheir forward ends by the curved portion 48. As shown in Fig. 1 each ofthese guide bars is provided with the horizontal portion 49 arrangedadjacent the curved portion 48 and at the rear ends of the horizontalportion is the downwardly and rearwardly extending inclined portion Thesupporting structure for the rear end of the bucket frame is bestillustrated in Figs. 1 and 6 and comprises a frame 54 which is attachedto the forward side of the axle 10. The rear side of said axle isprovided with a rack bar 55, the use of which will appear as thedescription proceeds. Slidably mounted between the forward bar of theframe 54 and the axle is a block 56 having attached to its upper side asupporting bar 57, the rear end of which is formed with a journalbearing for the reception of the shaft 58 which extends upwardlytherefrom and carries the pinion 59 for meshing with the rack bar 55. Itwill thus be seen that upon rotation of the shaft 58 the carriage orblock 56 will be moved laterally of the machine. In order to provide ameans for controlling the movements of the shaft a suitable hand wheel60 is attached to the upper end thereof as clearly illustrated in Figs.1 and 2. Extending upwardly from the block 56 are a pair of spacedstandards 61 which converge toward their upper ends which are providedwith the forwardly extending arms 62. The forward ends of these arms areconnected by a suitable bearing 63 in which the supporting post 64 isslidably mounted. This post is provided on its inner face with aplurality of gear teeth 65 for meshing engagement with a pinion 66mounted on the shaft 67 which is journaled in the arms 62 and isprovided with the hand wheel 68 by means of which the same is rotated.93

The lower end of the post 64 has threaded thereon a nut 69 forsupporting the rear end of the bucket frame 46 and a suitable eye 7 O isformed at the forward end of the bar 57 through which the rod 64 isslidable. The

bucket used in connection with the device is designated by the numeral71 and consists of a bottom having side walls formed integrallytherewith which are connected at their rear edges by a rear end wall.The forward guide rollers 73 which are adapted to engage the upper sidesof the guide rails 47 while similar rollers 7 4 are attached to thesides of the bucket a spaced distance from the rollers 73 and therollers 74 cooperate with the rollers 73 in holding the bucket on thetrack. A suitable bail 75 connects the forward ends of the sides of thebucket and attached thereto is a cable 76 which passes over the pulley45 and bends rearwardly over a suitable pulley 77 and thence over aguide pulley 78 to the drum 79 which will be more fully' hereinafterdescribed. The under run of the cable 76 winds around the drum forseveral turns and then it is extended forwardly as at 80 over a suitableguide pulley 81 and the idler 82 and is attached to an eye 83 which issecured to the rear wall of the bucket. It will thus be seen that whenthe drum is rotated to move the bucket forwardly on the bucket frame,the run 80 of the cable will pay off from the drum and when thebucketreturns the under run will be wound upon the drum while the upperrun will pay off. It will thus be seen that the cable will at all timesbe held taut and be prevented from kinking.

In order to steady the frame 46 a suitable transversely extending bar 84is provided and projects beyond the sides of the frame as shown in Fig.2. Suitable eyes 85 are attached to the outer ends of the bar 84 andconnected to the eyes is a cable 86 which is wound upon the drum 87 andis continued and has its opposite end attached to the eye 85 on the sideopposite that to which the first end is connected. Suitable guidepulleys 88 are secured to the outer end of suitable brackets 89 which inturn are connected to the standards 18 and it will thus be seen thatwhen the drum 87 is. rotated the frame may be shifted according to thedirection of rotation of the drum and when the device is properlyad'usted and the drum is held against rotation rther movement of theframe will be revented.

The drums 36, 9 and 87 hereinbefore referred to are loosely mounted on acountershaft 88 carr ing at one end a sprocket 89 over which t e drivechain 90 runs. This drive chain also runs over a drive sprocket 91 onthe motor shaft and it will thus be seen that when the motor 13 is inoperation the counter-shaft will be driven. In order that the drums maybe rotated simultane ously or separately each of said drums is providedwith a clutch half 92 and splined on the counter-shaft is a clutch half93 arranged for cooperation with each of the clutch halves 92. Theclutch halves 93 are controlled by levers 94 which are pivoted as at 95to the chassis of the device and it will thus be seen that when thelevers are moved so as to move the clutch halves into cooperativepositions the drums will be rotated.

While in the foregoing there has been shown and described the preferredembodiment of this invention, it is to be understood that such changesmay be made in the combination and arrangement of parts as will fallwithin the spirit and scope of the invention as claimed.

What is claimed is 1. A device of the class described comprising achassis, a motor mounted on said chassis, arms extending upwardly fromthe forward end of the chassis, said arms projecting forwardlytherefrom, a grubber mounted on one of said arms, a bucket frame mountedon the other of said arms, a bucket slidable on the bucket frame andmeans to move the rear end of the bucket frame transversely of thedevice to enable the bucket to cut a distance beyond each side of themachine.

2. An excavator of the class described comprising a frame, a bracketmounted at the forward end of the frame, an arm extending forwardly fromthe bracket, a bucket frame pivotally and slidably mounted on one of thearms, an excavating bucket oper able on said frame and means to move therear end of the frame transversely of the machine to enable the bucketto cut on each side of the machine.

3. In an excavator of the class described, a frame, a bracket extendingforwardly from the frame a bucket supporting frame pivotally andslidably mounted near the forward end of the bracket, a carriage movabletransversely of the main frame adjacent its forward end, the rear end ofthe bucket frame being attached to the carriage and means to move saidcarriage.

4. In an excavator,a main frame,a bracket at the forward end of the mainframe, an arm extending forwardly from the bracket, a bucket framepivotally and slidably mounted at the forward end of the arm, a carriagemovable transversely of the forward end of the main frame, the rear endof the bucket frame being attached to the carriage, a verticaladjustable post operable through the carriage for adjusting the rear endof the bucket frame vertically and means to move the carriagetransversely of the main frame.

In testimony whereof I aflix my signature in presence of two witnesses.

ELA 1). STORY.

Witnesses:

A. B. EDWARDS, KARL K. WHITE.

